News: This special session consists of three sections with three invited review talks and 9 contributed talks.

In the hierarchical structure formation model of the Universe, the most virialized massive haloes, the clusters of galaxies, reside at the densest knots of the cosmic web. The spatial distribution and abundance of these haloes are sensitive tracers of the underlying large-scale structure and, therefore, are prime probes for constraining cosmology, the formation and growth of dark matter-dominated haloes, and astrophysics.

Successfully launched in July 2019, eROSITA, the German-built telescope array operating in the X-ray band between 0.3-8 keV on board the Russian-German Spectrum-RG (SRG) mission, provides unique imaging and spectroscopic with its high sensitivity, large field of view, and high survey efficiency. SRG/eROSITA revolutionizes the field of astrophysics and cosmology by delivering and utilizing the largest pure intracluster medium (ICM) selected catalogs of galaxy clusters in statistical studies. Already in the public domain, the first All-Sky Survey (release date scheduled in Jan 2024), calibration, and performance verification data have resulted in rich science with more than 70 publications in the literature on cluster science and cosmology. In this EAS Special Session, we aim to demonstrate the rich science enabled by eROSITA on cluster science and cosmology when combined with overlapping multi-wavelength surveys. Given the imminent availability of new surveys with the Euclid Space Telescope and Rubin Observatory, this session will enable knowledge exchange and build collaborations in exploiting multi wavelength big data on studies involving structure formation, evolution, and cosmology. This session will bring together theorists and observers across the electromagnetic spectrum to discuss the latest results from the wide-area surveys.

Programme

The program consists of three sessions covering the following overarching topics:

• Studies of cosmic baryons and their evolution
• Precision cluster cosmology
• Properties and evolution of the intracluster medium
• Cosmic filaments and intergalactic medium
• Member galaxy properties, morphology, kinematics
• Photometric and spectroscopic redshift determination techniques
• Weak and strong lensing studies of massive galaxy clusters
• Future surveys to study the cosmic baryons

Invited speakers

• Stefano Ettori (INAF-OAS Bologna)
• Andrina Nicola (AIfA, Univ. of Bonn)
• Nicola Malavasi (MPE)

Scientific organisers

• Esra Bulbul (MPE; co-chair)
• Vittorio Ghirardini (MPE; co-chair)
• Sebastian Grandis (Univ. of Innsbruck)
• Miriam Ramos Ceja (MPE)
• Jeremy Sanders (MPE)
• Andrea Merloni (MPE)
• Kirpal Nandra (MPE)
• Angie Veronica (Univ. of Bonn)

Contact

Esra Bulbul (ebulbul @ mpe.mpg.de) and Vittorio Ghirardini (vittorio @ mpe.mpg.de)